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Showing 25 to 36 of 44 entries
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Development of paediatric critical care in northwestern Nigeria: Initial implementation with a needs assessment model.

Australian critical care : official journal of the Confederation of Australian Critical Care Nurses

Ibrahim A, Scruth E, Adeyinka A, Kabara HS, Rivera L, Hartjes T, Minso J, Pierre L.
PMID: 34593314
Aust Crit Care. 2021 Sep 27; doi: 10.1016/j.aucc.2021.06.002. Epub 2021 Sep 27.

INTRODUCTION: There is high paediatric morbidity and mortality in northwestern Nigeria, attributable in part to vaccine-preventable illnesses and lack of comprehensive training of medical and nursing staff in the healthcare delivery of paediatric critical care. Pediatric Universal Life-Saving Effort...

Fast ion acceleration in ultraintense laser interactions with an overdense plasma.

Physical review. E, Statistical, nonlinear, and soft matter physics

Habara H, Kodama R, Sentoku Y, Izumi N, Kitagawa Y, Tanaka KA, Mima K, Yamanaka T.
PMID: 15089415
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Mar;69(3):036407. doi: 10.1103/PhysRevE.69.036407. Epub 2004 Mar 24.

In order to study the ion acceleration processes in ultraintense laser-plasma interactions with solid targets, neutron spectra from deuteron-deuteron (D-D) nuclear reactions were measured. Spectra were obtained when (50-100 TW, 0.5-1 ps) laser light irradiated obliquely incident deuterated plastic...

Relativistic laser channeling in plasmas for fast ignition.

Physical review. E, Statistical, nonlinear, and soft matter physics

Lei AL, Pukhov A, Kodama R, Yabuuchi T, Adumi K, Endo K, Freeman RR, Habara H, Kitagawa Y, Kondo K, Kumar GR, Matsuoka T, Mima K, Nagatomo H, Norimatsu T, Shorokhov O, Snavely R, Yang XQ, Zheng J, Tanaka KA.
PMID: 18233928
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Dec;76(6):066403. doi: 10.1103/PhysRevE.76.066403. Epub 2007 Dec 18.

We report an experimental observation suggesting plasma channel formation by focusing a relativistic laser pulse into a long-scale-length preformed plasma. The channel direction coincides with the laser axis. Laser light transmittance measurement indicates laser channeling into the high-density plasma...

Pulse compression and beam focusing with segmented diffraction gratings in a high-power chirped-pulse amplification glass laser system.

Optics letters

Habara H, Xu G, Jitsuno T, Kodama R, Suzuki K, Sawai K, Kondo K, Miyanaga N, Tanaka KA, Mima K, Rushford MC, Britten JA, Barty CP.
PMID: 20517415
Opt Lett. 2010 Jun 01;35(11):1783-5. doi: 10.1364/OL.35.001783.

Segmented (tiled) grating arrays are being intensively investigated for petawatt-scale pulse compression due to the expense and technical challenges of fabricating monolithic diffraction gratings with apertures of over 1m. However, the considerable freedom of motion among grating segments complicates...

Density and temperature characterization of long-scale length, near-critical density controlled plasma produced from ultra-low density plastic foam.

Scientific reports

Chen SN, Iwawaki T, Morita K, Antici P, Baton SD, Filippi F, Habara H, Nakatsutsumi M, Nicolaï P, Nazarov W, Rousseaux C, Starodubstev M, Tanaka KA, Fuchs J.
PMID: 26923471
Sci Rep. 2016 Feb 29;6:21495. doi: 10.1038/srep21495.

The ability to produce long-scale length (i.e. millimeter scale-length), homogeneous plasmas is of interest in studying a wide range of fundamental plasma processes. We present here a validated experimental platform to create and diagnose uniform plasmas with a density...

Direct, absolute, and in situ measurement of fast electron transport via Cherenkov emission.

Physical review letters

Habara H, Ohta K, Tanaka KA, Kumar GR, Krishnamurthy M, Kahaly S, Mondal S, Bhuyan MK, Rajeev R, Zheng J.
PMID: 20366770
Phys Rev Lett. 2010 Feb 05;104(5):055001. doi: 10.1103/PhysRevLett.104.055001. Epub 2010 Feb 03.

We present direct measurements of the absolute energy distribution of relativistic electrons generated in intense, femtosecond laser interaction with a solid. Cherenkov emission radiated by these electrons in a novel prism target is spectrally dispersed to obtain yield and...

Proton radiography of a laser-driven implosion.

Physical review letters

Mackinnon AJ, Patel PK, Borghesi M, Clarke RC, Freeman RR, Habara H, Hatchett SP, Hey D, Hicks DG, Kar S, Key MH, King JA, Lancaster K, Neely D, Nikkro A, Norreys PA, Notley MM, Phillips TW, Romagnani L, Snavely RA, Stephens RB, Town RP.
PMID: 16907580
Phys Rev Lett. 2006 Jul 28;97(4):045001. doi: 10.1103/PhysRevLett.97.045001. Epub 2006 Jul 24.

Protons accelerated by a picosecond laser pulse have been used to radiograph a 500 microm diameter capsule, imploded with 300 J of laser light in 6 symmetrically incident beams of wavelength 1.054 microm and pulse length 1 ns. Point...

Silent coronary spastic angina: A report of a case.

Journal of cardiology cases

Sueda S, Sasaki Y, Habara H, Kohno H.
PMID: 30546557
J Cardiol Cases. 2015 Mar 10;11(6):166-168. doi: 10.1016/j.jccase.2015.02.003. eCollection 2015 Jun.

A 54-year-old man was admitted to our hospital due to abnormal electrocardiogram (ECG) changes. He had experienced no chest pain or chest discomfort during daily life until then. Ischemic ECG change was obtained by the treadmill exercise test but...

Energetic α-particle sources produced through proton-boron reactions by high-energy high-intensity laser beams.

Physical review. E

Bonvalet J, Nicolaï P, Raffestin D, D'humieres E, Batani D, Tikhonchuk V, Kantarelou V, Giuffrida L, Tosca M, Korn G, Picciotto A, Morace A, Abe Y, Arikawa Y, Fujioka S, Fukuda Y, Kuramitsu Y, Habara H, Margarone D.
PMID: 34134285
Phys Rev E. 2021 May;103(5):053202. doi: 10.1103/PhysRevE.103.053202.

In an experiment performed with a high-intensity and high-energy laser system, α-particle production in proton-boron reaction by using a laser-driven proton beam was measured. α particles were observed from the front and also from the rear side, even after...

An experimental platform using high-power, high-intensity optical lasers with the hard X-ray free-electron laser at SACLA.

Journal of synchrotron radiation

Yabuuchi T, Kon A, Inubushi Y, Togahi T, Sueda K, Itoga T, Nakajima K, Habara H, Kodama R, Tomizawa H, Yabashi M.
PMID: 30855271
J Synchrotron Radiat. 2019 Mar 01;26:585-594. doi: 10.1107/S1600577519000882. Epub 2019 Feb 22.

An experimental platform using X-ray free-electron laser (XFEL) pulses with high-intensity optical laser pulses is open for early users' experiments at the SACLA XFEL facility after completion of the commissioning. The combination of the hard XFEL and the high-intensity...

Observation of neutron spectrum produced by fast deuterons via ultraintense laser plasma interactions.

Physical review. E, Statistical, nonlinear, and soft matter physics

Izumi N, Sentoku Y, Habara H, Takahashi K, Ohtani F, Sonomoto T, Kodama R, Norimatsu T, Fujita H, Kitagawa Y, Mima K, Tanaka KA, Yamanaka T.
PMID: 11909268
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Mar;65(3):036413. doi: 10.1103/PhysRevE.65.036413. Epub 2002 Mar 06.

We report the first precise spectral measurement of fast neutrons produced in a deuterated plastic target irradiated by an ultraintense sub-picosecond laser pulse. The 500-fs, 50-J, 1054-nm laser pulse was focused on the deuterated polystyrene target with an intensity...

Slowdown mechanisms of ultraintense laser propagation in critical density plasma.

Physical review. E, Statistical, nonlinear, and soft matter physics

Iwawaki T, Habara H, Yabuuchi T, Hata M, Sakagami H, Tanaka KA.
PMID: 26274293
Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Jul;92(1):013106. doi: 10.1103/PhysRevE.92.013106. Epub 2015 Jul 27.

We use one- and two-dimensional particle-in-cell simulations to demonstrate that the propagation of an ultraintense laser (I=10(19)W/cm(2)) in critical density plasma can be interfered with by a high density plasma wall region generated at the propagation front. When the...

Showing 25 to 36 of 44 entries